In Pirate Kings game, your another objective is to complete the collection of Pirates. Almost 30 pirates are featured in the game; you need to open the chest for pirates; pirates are of three types; common, rare, and legendary. You may get duplicate pirate; so, it depends on your luck! Tap on the menu “my pirates” buy the chest! But I would recommend you to spend the coins on Island rather than these pirates; most of the time, you get duplicate and it’s very frustrating losing a huge amount of coins.